As to the slider's arm and hand movement - try to think about it this way. Let's say the runner was running 18 mph (a ballpark figure - close enough). During the slide he is decellerating - so he is moving at less than his running speed - less than 18 mph. It appears that from the earlier in time photo (the card) to the later in time photo (in the newspaper) he has moved a foot or two closer to 3rd base. So - in that amount of time could a human move his hand from his waist to his face? How fast would his hand have to move? Actually not that fast - his hand would have to move at very roughly the same speed as his feet. Seems pretty easy to me.
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